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  <title>Document</title>
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    boby {
      min-width: 550px;
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    .container {
      width: 100%;
      background-color: aqua;
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      margin: 0 200px;
      word-break: break-all;
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    .left {
      width: 200px;
      background-color: rgb(16, 199, 80);
      margin-left: -100%;
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    .right {
      width: 200px;
      margin-left: -200px;
      background-color: rebeccapurple;
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    .column {
      float: left;
    }
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</head>

<body>
  <div class="container column">
    <div class="wrap">
      这是中间内容电风扇是是是少时诵诗书是撒是撒是撒是撒qqqqqqqqqqqqqqqqqqqq1
    </div>
  </div>
  <div class="left column">这是左侧内容</div>
  <div class="right column">这是右侧内容</div>

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